Refrigerating device



Feb. 17, 1931. n. F. KEITH REERIGERATING DEVICE Filed July 26, 192B i; l u.

` INVENTOR.

oiawd 7525@ a/J BY @Mw r w ATTORNEY.

i 4o sorber shell.

Patented Fleb. 17, 1931 f i.

My, invention relates to refrigerating lde f' vices, particularlyV of the 'typej in Ywhich am Y structure i'sfprovided Whichoperates onv the] absorption principle, and Whichv require's're- 5 movalV fromtheprefrigeratorcabinet for lthe purpose of generation. f -Y r i o 'Such devices include a receptacle 4serving asa generat'or-absorber, and va receptacle serving asa {condenser-evaporator, Withcon-A 10 necting conduits so arranged as toprovide' two passages forthe gases, one from lthe sur-V face'of the liquidabsorbent, and 4onefrom belovvthe surface thereof', With some suitable type of seal orvalvegvvhichpreventszanyriflow from the condenser-evaporatortothe.genv.

erator-absorber-'exceptto a point* belovv4 the level: of the absorbentand any ioWgfro-m the generator-absorber to the'.,1condenser-evap-V orator except from-above the surfaceofothe p `20 absorbentrw Y f if f v `pending application l Serial No."V y 201,904, led June 27, 1927, Inh'ave described In my an Vapparatus-Whereby-'I provide lf or an efiicient absorptionunit, designed to; be lifted l outoffthe refrigerator cabinet, in ordertog apply heat tov the" generator-absorber, and

cold'toy 'the cOIClcnserfevaporator `during fthey generation` andscond'ensation of refrigerant. It is the vobject of my present invention to v.30 improve in somevrespectsu'pon the structureV of-iny said application. i VVOneof the improvements lies-in the provision of meanswhereby I increasethe condensation of absorbent dur-A ing the step of generation V(kno-Wnas dehy '235 drat'ion), by means of supplying -Water directlyto the topl of the generatorabsorber shell, andperferably by' fo-rcingthe gasesV evolved during generation to pass around the Water-cooled p/ortionvof the generator-ab- Incidental to thisl alsoV provide means whereby theA sounder or 'Whistle which gives Warningupon ,completion'of the process of generation, is made more ef'cient and brought under betterco-ntrol. -1

Anotherrobjectis to provide for amore efiicientand more readily manufacturable safety valve device, andto increase dehydration in the tubular passage between the generatorabsorber and the'condenserfevapora# 'l The igure'is ajsejction device centrally and longitudinally. Y Asinzmy? pending application, there," are two spherical containers, the. "container .ori ball l being the generatorlabsorbe'r, and the' container or ball 2'being the condenserQ-evap' orator. Atubular shell Bis ,connected tothe top of-theball 1:,jas byfsoldering; or welding andterminates at its other-end in;asump-4,- closed; atthe bottomjas ati A"tube"61ex tends from thefinterior of the-:ball 2, into the, top of the sumpportion of-thetubularshell "3, andhas an orice 7.onlits under side. f1 A italien* V f Uponthe top of thetubularportion lisjal 'i handle 8 i for ymanipulating ,thejdejvice which; v

handle has alshoe`9thereon,Y upon which lthe il i. Y

structure can be rested upon a'table lorV floor, and whichk denes a draining posi-tionforpthe device, prior to the'generati'ngfstep ofgitfs,

operation.

vessel 10', located within the tubular shell .just above they tube 6, Will receive, When'the devicel is righted from said'drainingposition, a'suifi-l cient supply ofjliquid to permit it to actas La. dehydrator duringthe generation step., A

In my present device this vessel 10, open at sov the top andclosed at the bottonniis surround? edv by a'spirally arranged Wire 11i Which forces thegeneratedY gases to pass in a spiral path" ations the refrigerant from'r-the bfall2 passes f throughv the Vtubular shell 3 andthen through l the pipe 12 andV into the absorbent.

Around the pipe12,shortlybeneath,thertop of the ball l, isV placedan umbrella shaped l plate 13, which servesas a baflie-for ay purpose tobedescribed.;V` i W i 1 The generated gases formed largely of the refrigerant pass out of the ball 1 into the tubu lar shell 3 through a pipe 14, and into the closed lvessel or trap 15, from which a tube 16 extends down to a point below the upper level of the pipe l2. Y Y

The space in the tubular shell 8 below the top of the pipe 12, is yus'edas a liquid seal,.'and

' the presence of the trap acts to assist in preventing a sudden surge ofpressure trom driving the sealing liquid into tl1eb*a"ll'^1",'thus" stroying the operation of the device.

Around the top of the ball 1 is formed chamber 17 by means of@ an"annular;channel,M shaped piece of sheet metal solder to the tubul'afr'shell Sfand to ythebfall 1.f;-. Instead ofliav-f ing ar separatedchamb'eraround .the .top 'of' the ball, as in my irst' casegjI:provider-fondirect 'contact of vwaterV with the.. top lof-@the itialrfeductionin pressureao'ftheair endgasesV withinthe ball, thusstarting the absorptionevaporatio cycle. This'operaton will :per-

. mit watertolow in through' the bleed fitting.

A Duringlthegen'eration Vycle-when the ballV 1. i`s" subj`ected.t`o heatgithb water' held in the cihamberV 17 will' turn into' 'steam whichwill escape from the chamber through the4 bleed hole: By-.thetime thewat'er falls* below the level of the whistlev tube, andtheleat has progressedsuihtcientlyto start considerable'or` .af-boil', thebleed fitting will 'not' carry oft the steam f which will pass .through the whistle giving warning that the" generation iss com- -Durin'g generation'. oflthe gases from the`V 'the gasesrisethrough the ball and encounter theumbrella-like battles which causes them tolftlraverse the top wall joi' the ball; This Wall-is' Adirectly fco'oled by the water Iheld therein, thus effect-ing an'initi'al dehydration ot` the gases, so thatthefabsorbent collects and drip-'s' back Linto the' supply within the ball.

rlheliquidseal 'also imparts dehydration to somee-Xtent, and the dehydrating. chamber located above thefsump completes' `the de- 'portable and inexpensive ratus',1it is'quite essential that dehydration of the gases bemadevery completelyfor else the eiiciency of operation is'not latfa'll satisfactory.- Y f improvements itfaieetiy eeen-ng the top .of the generation ball, together with the ved with .said means.

preferable use of thebaiiie `within the ball, impart considerable improvement over my former device, and the spiral path enforced in the other end ofthe main conduit gives a further eiecti'venessfto dehydration at that point over my former structure.

Having thus described my'inventiomwhat I claim as new land desirev to secure by LettersPatent, is

1. In arefrigerating Vdevice of absorption type, 'a generator-absorber casing, a condenser-eyapora-tor casing, passageways between tlimiin'cliiding a seal, and means for retaining ajceoling liquid-fing direct contact with the generator-absorbercasing about that portion lthereoffthroughiwhich thev generated gaspassa gewa'y extends', fand an: alarm iiorindicati'ngV the' completion ofa generationf'cycle Vassociat- 2 i2. ln a' refrigeration., device fof' absorption type, a generator-absorber 'casing,a condenser-evaporator casing, p'assargeways between them, said generator-absorber `casing having a sphericalshap'e, ahollowishe-ll `secured about the topfof 'said casinglto form a water receptacl'e 'located' about .the generated gas outlet passageway from' the casing, with the water V resting-directly on thecasingyand an alarmfor indicating thecompletion of'a generation cycle associatedwith said'shell.`v

3; In a refrigeration devicerofl a-bsorpton` type, a generator-absorber'casing, acondenser1-evaporator lcasing, passageways between them, vsaid generator-absorber 'casinighavinga spherical' shape, a hollow shell secured about thetop ofsaid Casin-gto orma'w'ater receptacle"loe at'ed about the' lge'n'erated v.gas outlet passageway from they casing, with the water resting directly jonfthe 'casi-ngi, and a baiii'e within'the casing causinggener'ated gases to traverse-the' water-'engaging prti'onf of the oasinglinjorderfto reach'the saidlpass'ageway, and 'ana'larm for' indicating thecomple'ti'on of a generation cycle' associated with said shell.

, 4;. In a refrigeratingdevice of vabsorption type, a4 generator-absorber casing, a condenser-evaporator casing, Vpassageways 'between them Yincluding -a seal, and means :tor-'retaining a cooling liquid -in direct "contact with the generator-absorber casingabou't that portion thereof through which the generated gas' passageway extends, and baiili'ngmeans within the casing caus'inggenerated gases to traverse that portion, and/an alarm for indicating thecompletion of a generation 'cycle associated with said means.-

V5.1In a refrigerating device ofthe characf ter descr1bedl,the combination with the casing of a generator-absorber chamber, of a'v'arning to give audible signal ofthe completion of generation, comprising a' "receptacle for cooling ywatermounted "on the generator-absorber casing,-a whistle therein terminating within thec'asing toward the highwater mark therein, a bleed fitting from saidv casing for escape of steam and vaporV and'iniux of, Water. v f 6. In a refrigerating vdevice of the charac-e. ter described; the combination with the casing j of a generator-absorber chamber, of awarnving to give audible signal of the completion of generation, "comprising a receptacle for c001-V v ing Water mounted on thegenerator-absorber ff casing, a Whistle therein terminating within wf the casing toward the highwater mark therein, and a bleed fitting from said casing for escapel of steam1 and vapor and influx of 'd Water. Y

v1 7. In a refrigerating devicey of the charf 15 acter described, the combination lof a generttor-absorber casing, a condenserfevaporatori casing, anda tubular casing between them, of

liquid retaining chambers in direct Contact with generated gases asthey leave the gen- Y. 2g erator-absorber and just prior to their en- 4trance into the condenser-evaporator, and

1an alarm for'indicating the completion of a generation cycle associated with said cham-1 .bers/l Y Y A`DAVID' FORBES .'KEITIPL.;VV "Y 

